Which one of the following statements is NOT an advantage of DyanamoDB being built on Solid State Drives:
Correct Answer:C
In DynamoDB, SSDs help achieve design goals of predictable low-latency response times for storing and accessing data at any scale. The high I/O performance of SSDs also enables to serve high-scale request workloads cost efficiently, and to pass this efficiency along in low request pricing.
Reference: http://aws.amazon.com/dynamodb/faqs/
An orgAMzation has created an application which is hosted on the AWS EC2 instance. The application stores images to S3 when the end user uploads to it. The orgAMzation does not want to store the AWS secure credentials required to access the S3 inside the instance. Which of the below mentioned options is a possible solution to avoid any security threat?
Correct Answer:A
The AWS IAM role uses temporary security credentials to access AWS services. Once the role is assigned to an instance, it will not need any security credentials to be stored on the instance. Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/iam-roles-for-amazon-ec2.html
A user is uploading archives to Glacier. The user is trying to understand key Glacier resources. Which of the below mentioned options is not a Glacier resource?
Correct Answer:B
AWS Glacier has four resources. Vault and Archives are core data model concepts. Job is required to initiate download of archive. The notification configuration is required to send user notification when archive is available for download.
Reference: http://docs.aws.amazon.com/amazongIacier/latest/dev/amazon-glacier-data-model.html
Regarding Amazon SNS, to send messages to a queue through a topic, you must subscribe the queue to the Amazon SNS topic. You specify the queue by its .
Correct Answer:A
In Amazon SNS, to send messages to a queue through a topic, you must subscribe the queue to the Amazon SNS topic. You specify the queue by its ARN.
Reference: http://docs.aws.amazon.com/sns/latest/dg/SendMessageToSQS.htmI
What happens if your application performs more reads or writes than your provisioned capacity?
Correct Answer:D
Speaking about DynamoDB, if your application performs more reads/second or writes/second than your tabIe’s provisioned throughput capacity allows, requests above your provisioned capacity will be throttled and you will receive 400 error codes.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ProvisionedThroughputlntro.htmI